CVE-2026-89877

Kernel use-after-free via incomplete probe cleanup

Published Sep 16, 2026 · Updated Sep 16, 2026

Resource cleanup error in the Linux saa7164 media driver from 2.6.32 allows attackers to cause unspecified impact after PCI probe failure. saa7164_dev_setup() links a device globally before requesting BAR regions but fails to unlink it when get_resources() fails, after which probe cleanup frees the device. Reachability requires compatible SAA7164 PCI hardware and a BAR allocation failure, leaving a dangling list entry and potentially an unreleased BAR0 region.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource cleanup error in the Linux saa7164 media driver from 2.6.32 allows attackers to cause unspecified impact after PCI probe failure. saa7164_dev_setup() links a device globally before requesting BAR regions but fails to unlink it when get_resources() fails, after which probe cleanup frees the device. Reachability requires compatible SAA7164 PCI hardware and a BAR allocation failure, leaving a dangling list entry and potentially an unreleased BAR0 region.

The record

CVE
CVE-2026-89877
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.6.32
  2. Affected versionversion=443c1228d50518f3c550e1fef490a2c9d9246ce7 <28e84c6e2e6753ed238ea097b2842a32a6a6879b
  3. Affected versionversion=443c1228d50518f3c550e1fef490a2c9d9246ce7 <4d2048466af9e2c960c5be6dcd317e3b657d268b
  4. Affected versionversion=443c1228d50518f3c550e1fef490a2c9d9246ce7 <69259c627009bf7621010ae9e997dad2dad3339c
  5. Affected versionversion=443c1228d50518f3c550e1fef490a2c9d9246ce7 <77f216f8de6221efb6f6c471bc9e598f1879825b
  6. Affected versionversion=443c1228d50518f3c550e1fef490a2c9d9246ce7 <daa5b32cdf7db81a07ee2a91ce092a363e7754aa
  7. Affected versionversion=443c1228d50518f3c550e1fef490a2c9d9246ce7 <fc65623524b5bf23baddc6ae688d954fba0d5de2

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.32; version=443c1228d50518f3c550e1fef490a2c9d9246ce7 <28e84c6e2e6753ed238ea097b2842a32a6a6879b; version=443c1228d50518f3c550e1fef490a2c9d9246ce7 <4d2048466af9e2c960c5be6dcd317e3b657d268b; version=443c1228d50518f3c550e1fef490a2c9d9246ce7 <69259c627009bf7621010ae9e997dad2dad3339c; version=443c1228d50518f3c550e1fef490a2c9d9246ce7 <77f216f8de6221efb6f6c471bc9e598f1879825b; version=443c1228d50518f3c550e1fef490a2c9d9246ce7 <daa5b32cdf7db81a07ee2a91ce092a363e7754aa; version=443c1228d50518f3c550e1fef490a2c9d9246ce7 <fc65623524b5bf23baddc6ae688d954fba0d5de2

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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